Pith Number

pith:EXUM5HL7

pith:1996:EXUM5HL7RJVXKYZER3CTCF7UAM

not attested not anchored not stored refs pending

Deep radio observation of the gravitational lens candidate QSO2345+007

Alok R. Patnaik (Max-Planck-Institut f. Radioastronomie), Peter Schneider (Max-Planck-Institut f. Astrophysik), Ramesh Narayan (Harvard-Smithonian Center for Astrophysics)

arxiv:astro-ph/9601093 v1 · 1996-01-18 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXUM5HL7RJVXKYZER3CTCF7UAM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:12:44.045256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25e8ce9d7f8a6b7563248ec53117f40333814c6e0818c48d536f15559066118e

Aliases

arxiv: astro-ph/9601093 · arxiv_version: astro-ph/9601093v1 · doi: 10.48550/arxiv.astro-ph/9601093 · pith_short_12: EXUM5HL7RJVX · pith_short_16: EXUM5HL7RJVXKYZE · pith_short_8: EXUM5HL7

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EXUM5HL7RJVXKYZER3CTCF7UAM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 25e8ce9d7f8a6b7563248ec53117f40333814c6e0818c48d536f15559066118e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36136ce91392318b54beecb094188a9448cc1c35f097455d6114bd5a4d6954fd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-01-18T14:08:58Z",
    "title_canon_sha256": "cb19aad1e262ace4d1717cb620525dd08179c03be035bc5b30faea9196ca52bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9601093",
    "kind": "arxiv",
    "version": 1
  }
}